重庆市天然气化工重大专项CSTC2008AA4026;中央高校基本科研业务费跨学科类重大项目CDJZR12228801;重庆市自然科学基金重点项目CSTC2011BA4017.supported by the Key Scientific Project of Natural Gas Industry of ChongqingCSTC2008AA4026;the Interdisciplinary Class Major Projects of Central UniversitiesCDJZR12228801;the Key Natural Science Fund of ChongqingCSTC2011BA4017